Simplify
list the numbers of
​

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

i believe the answer is the polygon, heptagon.

21

jk it's 20

step-by-step explanation:

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.